The ICRC is actually only pushing this for "real-war" simulations. I don't think Madworld is very realistic, as much as I'd love my own chainsaw gauntlet.
Though I don't agree with the whole lobbying congress to make it law thing, I think it could work for some games. As long as the developers are ok with it, adding war crime laws to video games could be educational and add to the realism.
I think "impulsive" narcissism can be ruled out. I'm not saying narcissism has absolutely zero to do with it. But Snowden joined the NSA because he was planning to find and release info on NSA's abuses if they existed, so it was anything but the impulsive nature of any ordinary disgruntled NSA employee.
It's kinda funny since most people, at least from my experience, don't have a problem freely pirating games older than ~15 years even those that don't pirate games normally. And that's if the developers haven't already released their old content for free or next to nothing anyway.